Correct

末年

/ mònián / 
Strokes

Definition

the final years (of a regime)

Example

As a Noun

last years of a person or a dynasty/reign

1
Zài
在
qiánlóng
乾隆
mònián
末年

during the last years in the reign of Emperor Qianlong

2
Tángcháo
唐朝
mònián
末年

last years of the Tang Dynasty